Astrolog is a free astrology program that's been available for Windows and other platforms since the early 1990's. Its complete source code is available as well. Download it at: http://www.astrolog.org/astrolog.htm

The new Astrolog version 6.30 has been released! One of its new features is "chart spheres", or wheel charts but in 3D. See an animation of a chart sphere above. For more about them see the following thread on this forum: http://skyscript.co.uk/forums/viewtopic.php?t=9836

Astrolog also now includes transit graphs, which map the orb of aspects over time, with an example seen below:

Continuing to develop "chart spheres" as introduced above, Astrolog 6.40 allows producing true 3D models of select charts. Here's a more extensive animation of a moving through and around a chart sphere, while the time/date of the chart itself is also animating: https://www.youtube.com/watch?v=UdRaDGXBV-0

Another Astrolog chart that supports 3D models is its solar system orbit chart. Orbit trails can be drawn behind planets, including showing aspect lines between planets in their orbits. Also, the whole solar system can be offset over time, producing spiral helix patterns such as seen in this video: https://www.youtube.com/watch?v=jFhwfM0FKCo

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